静电

MGM is introduced to solve field distributions in 3-D electron optical systems. The difference equation, the discrete form of Laplace's equation, is deduced in 3-D Cartesian coordinates. In view of the smooth effect, MGM combines Gauss-Seidel iteration with a technique known as coarse grid correction. Formulae for restriction and prolongation are deduced and expressed in terms of tensors.

将多重网格法引入电子光学系统中三维静电场的计算，对三维笛卡尔坐标系中的差分方程，采用高斯-赛德尔迭代法求解差分方程组，并结合迭代过程讨论了粗网格的误差校正技术；在不同网格层之间进行场值的限制和延拓，推导了三维静电场中的限制、延拓公式并以张量的形式表示。

3 Anti-ESD accouterment wearing to avoid the ESD damaged the products.

3人员需要配戴隔离静电的装备，以避免静电破坏生产产品。

The relationship between the structure and antistatic performance of different antistatic agent such as anionic, cationic and amphoteric antistatic agent was studied.

详细地研究了阴离子、阳离子型以及两性抗静电剂的抗静电性能与其结构以及其使用浓度的关系。

In circuit design, using annular anti-static design, avoid static electricity damage to the LED.

在电路设计上，采用环形防静电设计，尽量避免静电对LED的损伤。

"Continuity of wrist straps, grounding of worktables "

&在静电控制区域，有静电稽查程序包括静电确认、&

The article elaborated anything is first static electricity balanced and the static electricity balanced condition as well as under the static electricity equilibrium condition conductor charge distribution situation proof.

文章先论述了什么是静电平衡和静电平衡的条件以及在静电平衡条件下的导体的电荷分布情况的论证。

Can be used to test wrist and grounding wire, wrist to skin , antistatic plate, antistatic mat and grounding wire.

手腕和接地线、静电手腕与皮肤之间接触的阻抗，防静电接板、防静电垫子和接地线等

When a small amount of poly was added, the surface resistivity of PVC materials was not sensitive to atmospheric humidity and was further reduced, and the tensile strength and break elongation of PVC, however, were improved.

在上述抗静电PVC材料中添加一定量的聚氧化乙烯，可以降低抗静电材料对环境湿度的依赖性，并提高PVC材料的力学性能和抗静电性能。

This paper is composed with three parts:finite element analysis and optimization of electric field high voltage electrostatic spinning working,design high voltage electrostatic spinning machine and experiments on it.

本文的研究内容主要由三部分组成，即高压静电纺丝工作电场的有限元分析与优化、高压静电纺丝机的设计以及高压静电纺丝机的试验研究。

To insert the mobile computer hard drive before hand as much as possible not to come into direct contact with the mobile hard disk interface of metal, because the electrostatic people will inadvertently move the metal interface as a hard disk electrostatic induction current transmission channel to the formation of the main board for computer attacks; To prevent accidents from occurring, we plug the mobile hard disk before you should touch the metal frame or a variety of channels even though, to people out early release of static electricity, after the plug mobile Even if the hard disk when the hands are not careful when the mobile hard disk interface of the metal parts will not move the hard disk interface, or how much harm a computer motherboard.

在向电脑中插入移动硬盘之前，尽可能地不要用手直接接触到移动硬盘接口处的金属，因为人身上的静电会在不经意间把移动硬盘的金属接口当作静电感应电流的传输通道，来对电脑主板形成攻击；为防止意外发生，我们在插拔移动硬盘之前，先应该用手摸一下金属门框或各种尽管管道，以便将人身上的静电提前释放掉，以后在插拔移动硬盘时即使手不小心碰到了移动硬盘接口处的金属部位，也不会对移动硬盘接口或电脑主板造成多大危害。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。